Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood. A sheet metal screw has sharp threads that cut into a material such as sheet metal, plastic, wood, hard rubber, aluminum, and other comparable compositions..
A machine screw, also called a stove bolt, is generally a smaller fastener threaded the entire length of its shank..Machine screws are used in fastening nearly all types of hard materials.